High-refractive-index organosilicon material for light-emitting diode (LED) packaging and preparation method of high-refractive-index organosilicon material

Abstract

The invention relates to a high-refractive-index organosilicon material for light-emitting diode (LED) packaging and a preparation method of the high-refractive-index organosilicon material. The technical scheme includes that according to a formula ration, three materials of a phenyl vinyl silicone resin, a phenyl hydrogen silicone resin and nano silicon dioxide (particle size distribution 5-15nm) which is treated by a silane coupling agent are placed in a 2L internal mixer to be internally mixed for one hour, then a platinum catalyst with a platinum content of 200-1000ppm is added to a nitrogen atmosphere, internal mixing is performed for 10 minutes again, finally, an alkynol compound is added, and internal mixing is continuously performed for 10 minutes to obtain the high-refractive-index organosilicon material. Compared with existing high-refractive-index organosilicon materials for LED packaging, the high-refractive-index organosilicon material for LED packaging is higher in drawing strength and larger in cohesive force under the condition of the same refractive index and light transmittance.

Description

technical field

[0001] The invention relates to organic silicon materials, especially high refractive index organic silicon materials used for LED packaging. Background technique

[0002] At present, most of the silicone materials used for LED packaging are materials with ordinary refractive index, and its refractive index is (1.41-1.43), but the LED luminous flux packaged with this ordinary refractive index silicone material has low luminous flux and waterproof effect. bad. In order to pursue a higher luminous flux, the LED packaging industry gradually adopts phenyl-modified silicone materials for LED packaging. This phenyl-modified silicone material has a high refractive index of (1.51-1.56). The light transmittance of packaged LEDs is generally increased by 5-10%, and the water resistance is also better than ordinary refractive index. However, the disadvantages of using phenyl-modified silicone materials in the prior art are: bonding with the substrate Poor strength, po...

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